Three-dimensional printer



FIG. 1 is a front view of a three-dimensional (3D) printer in accordance with the present disclosure;

FIG. 2 is a rear view of the 3D printer shown in FIG. 1;

FIG. 3 is a left-side view of the 3D printer shown in FIG. 1;

FIG. 4 is a right-side view of the 3D printer shown in FIG. 1;

FIG. 5 is a top view of the 3D printer shown in FIG. 1;

FIG. 6 is a bottom view of the 3D printer shown in FIG. 1;

FIG. 7 is a front, top, and left-side perspective view of the 3D printer shown in FIG. 1;

FIG. 8 is a front, top, and right-side perspective view of the 3D printer shown in FIG. 1;

FIG. 9 is a rear, bottom, and left-side perspective view of the 3D printer shown in FIG. 1; and,

FIG. 10 is a front, top, and right-side perspective view of the 3D printer shown in FIG. 1, when the 3D printer is opened.

The broken lines show portions of a 3D printer which form no part of the claimed design. 

CLAIM The ornamental design for a three-dimensional printer, as shown and described. 